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EC number: 271-089-3
CAS number: 68515-47-9
DTDP do not produce acute or
chronic toxicity to earthworms or plants at high concentrations in soil.
Since DTDP does not pose an acute or chronic hazard to the terrestrial
compartment, it is not possible to derive NOECs or PNECs needed for
quantitative risk assessment. However, it is possible to qualitatively
conclude based on available effects test data that DTDP is not harmful
to terrestrial organisms.
The data used to characterize the
terrestrial toxicity of DTDP are for DIDP (CAS #68515-49-1), which is an
analog to DTDP. Results of studies with DIDP suggest that DTDP will not
cause toxicity to terrestrial organisms and plants at high soil loading
levels. Therefore, because of the structural similarity between these
substances and the similar biological behavior of high molecular weight
phthalate esters in general, data for the analog can be used to
characterize the biological effects of DTDP for this endpoint. The
terrestrial organisms toxicity dataset includes results for an
earthworm, Eisenia fetida, and the plant toxicity dataset
includes results for two species, Lolium species and Lactuca
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